MIL-W-80027D
COMPRESSED GAS ASSOCIATION INCORPORATED (CGA) SPECIFICATIONS
(Application for copies should be addressed to the Compressed Gas Associa-
tion Inc. , 500 Fifth Avenue, New York, NY 10036.)
AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)
ASTM-D-3951 - Commercial Packaging, Standard Practice for.
ASTM-E-380
- Metric Practice.
(Applications for copies should be addressed to the American Society for
Testing and Materials, 1916 Race St., Philadelphia, PA 19103.)
2.3 Order of precedence. In the event of a conflict between the text of
this specification and the references cited herein, the text of this speci-
fication shall take precedence.
3.
REQUIREMENTS
3.1 First Article.
When specified (see 6.2.1), a sample shall be sub-
jected to first article inspection (see 4.3 and 6.2).
3.2 Design. The welding machine shall be new and one of the manufac-
turer's current models capable of AC welding and DC welding both straight
and reverse polarity in accordance with the requirements herein.
The
machine shall include all components, parts, and features necessary to meet
the performance requirements specified herein.
All parts subject to wear,
breakage, or distortion shall be accessible for adjustment, replacement, and
repair. The welding machine shall be designed and constructed to conform to
the requirements of NEMA EW-1.
3.2.1 Measurement systems. Unless otherwise specified, either the U.S.
Customary System of Units (US) or the International System of Units (SI)
shall be used in the design and construction of the machine.
When one
system of measurements is required, the particular system shall be as spe-
cified (see 6.2.1).
In this specification, all measurements, dimensions,
sizes and capacities are given in SI units and US units.
US units may be
converted to SI units through the use of the conversion factors and methods
specified in ASTM-E-380.
3.2.1.1 Measuring and indicating device calibrations.
Unless otherwise
specified, either the U.S. Customary System of Units (US) or the Interna-
tional System of Units (SI) shall be used to graduate measuring and indicat-
ing devices such as scales, pressure gauges, temperature indicators, and
other similar devices. When one system of graduation is required, the par-
ticular graduation shall be as specified (see 6.2.1).
Regardless of the
measurement system used, all measuring and indicating devices on the machine
shall be graduated in the same system.
3.2.1.1.1 Dual calibrations. When specified (see 6.2.1), measuring and
indicating devices will be graduated in both the US and the SI system of
measurements.
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